Wet-graphite distributer and polisher



J. BOTT.

WET'GRAPHITE DISTRIBUTER AND POLISHER. APPLI-CATION FILED JULY 23,1920.

1,367,940. Patented Feb. 8,1921.

2 SHEETS-SHEET l.

@606 fiofl' o mtO MML 2 SHEETS-SHEET 2.

Patented Feb. 8, 1921.

APPLICATION FILED JULY 23, I920.

. E] M 'c WET GRAPHITE DISTRIBUTER AND POLISHER.

UNITED STATES PATENT. OFFICE...

JACOB BOTT, OF JAMAICA, NEW YORK.

WET-GRAPHITE DISTRIBUTER AND POLISHER.

Application filed July 23,

To all whom it may concern:

Be it known that I, JACOB Bo'r'r, a citizen of the United States, and a resident of Jamaica, in the county of Queens and State of New York, have invented certain new and useful Improvements in et-Graphite Distributers and Polishers, of which the following is a specification.

This invention relates to improvements in 19 devices for mechanically applyinv to the wax mold, a coating of metal, usually in the form of a graphite or finely divided black lead, the same being a conductor of electric ity, so that when placed in a prepared bath it will attract the copper or other metal which forms the shell of the electrotype.

It will be understood that the graphite must be so applied as to uniformly metallize every part ofthe wax impression, as

copper will not become deposited on bare parts, a matter of considerable difiiculty upon raw or built up portions and nearly impossible if the dry bushing process be used, besides the waste, uncleanliness and unhealthin ss of the operation.

It is obvious if such beating and brushing, with incidental injury to the finder lines, can be dispensed with and the graphite applied evenly and uniformly to every portion of the wax impression, electrotypes of a far superior quality would result.

This is the main object of the invention and allied with it are provision of means for applying the graphite, in the form of an emulsion or paste, so as to contact with the sides as well as the faces of the impression,

in such manner as to avoid damaging the li htest lines, and to wholly obviate manual la lior in the operation.

These and other analogous objects, which will become apparent as the description progresses, are attained by the novel construction, combination andlarrangement of parts hereinafter described and shown in the accompanying drawings, forming a material 5 part of this disclosure, and in which:-

Figure 1' is a side elevational view of a machine for applying wet black lead, parts being broken away to show the invention as operatively engaged therewith.

Fig. 2 is-a partial plan view of the same.

. Fig. 3 is a fragmentary sectional view,

taken on line 3-3 of Fig. 2.

Fig. 4 is a transverse sectional view taken on line 4-4 of Fig 3.

Referring to the drawings in detail, the

Specification of Letters Patent.

Patented Feb. 8, 1921.

1920. Serial No. 398,428.

numeral 10 designates in general a tank having its bottom 11 inclined downwardly to ward the front 12, while at the rear is a motor driven pump for causing a lively circulation of the liquid bath of graphite in the tank. 7

A horizontal shaft 14 is driven by the pulley 15 from the motor and has secured to its outer end a worm l6 driving a worm wheel fixed on a transverse shaft 17 on which is also a sprocket 18, driving, by means of the chain 19, a sprocket 20 on the shaft 21, passing through the tank at its rear end.

Mounted on the shaft 21 within the tank 70 is a toothed roller 22, driving an endless belt conveyer 23, comprised of slate, the conveyer moving closely adjacent to the flooring 11 and thence upward over rollers 24 and 25 nearly to the level of horizontal top edge of the tank.

At about the center, over the tank is a box 26 containing a plurality of spray heads (not shown) fed by the pump, the excess liquid passing to the lowermost portion of the bottom of the tank, at which point the pump suction is attached.

So far the description is of a well known make of machine, and not a part of the invention, which will now be disclosed.

On the shaft 14 is a pulley 30 driving a belt 31, trained over another pulley 32 fixed on a horizontal shaft 33, mounted in bearings attached to the side of'the tank 10.

At the front end of the shaft 33 is a bevel gear 34 meshing with a mating gear 35 secured at the lower end of a vertical shaft 36, housed in a bracket on the side of the machine and extending above the top of the tank through a pair of fixed plates 37 and 38 supported by brackets 39 rising from the side walls of the tank.

Obviously the shaft 14 may be extended and the-bevel gear 34 fixed directly upon it, the purpose being solely to convey rotary motion tothe shaft 36.

Fixed upon the upper end of the shaft 36, between the plates 37 and 38, which extend outward for that purpose, is a spur gear 40,

meshing with an idler 41 driving a train of spurgears 42, mounted between the plates 37and38 on vertical spindles 43 housed in the plates, which are held rigid by riveted spacers 44 disposed at intervals therebe tween. Thus all of the several spindles 43 are rotated in unison, those at the rear in one direction and those at the front in a reverse direction, as will be apparent in F1 2.

Fassing diametrically through the lower ends of the spindles 43 are elongated slots 45 receptive of pins 46 fixed in sleeves 4:7,

slidable circumjacently of the ends of the spindles and fixed to the lower ends of the sleeves are plates 48, there being interposed within the sleeves, between the plates and ends of the spindles, compression springslt), tending to press the plates downward.

The polishers or distributers 50, which experience has demonstrated as best for the purpose, are so-called rubber sponges, preferably oblong or elliptical in shape, secured to the lower side of the plates L8 in any preferred manner, the device shown comprising a pair of U-shaped loops, the bight or curved portion 51 of whichdirectly en gage the sponges, while the straight, parallel arm portions 52 pass upward through appropriate openings in the plates 48 and are riveted or otherwise firmly engaged in other plates 53, slidable onthe sleeves 47.

Coiled compression springs 54; encircling the sleeves between the plates 48 and 53,

tend to draw the loops, partially inclos'ing i 1 the sponges, tightly against the plates 48 wax plates are placed directly upon the surface of the slowly moving conveyer 23 and 7 then, as they are advanced, subjected to similar treatment bythe mechanically actuated distributers, which are so arranged as to contact with the entire surface, lightly but effectively, and withoiit damage to the finest lines, rulings or marks of any character made in the wax, and due to the'shape and movement of the distributers,the sides ofthe impressions, as well asthe tops, are caused to receive a proper unbroken coating I of the graphite, without'damage to the work and. without the employment of .manual lab-or.

The foregoing description is, however, to V be regarded as illustrative rather than restrictive, as obviously many minor changes may be made, not calling for the exercise of inventive talents, and without departing from the general spirit and scope of the pended claims.

I claim: 1. A distributing or polishing head comprising a pendently supported power driven shaft, a sleeve slidable thereon, a spring in said sleeve against which the end of said shaft abuts, and a distributing or polishing element carried by said sleeve.

2. A distributing orpolishing head comprising a vertical power driven shaft supported at its upper end, a sleeve slidable thereon, a spring in said sleeve against which the lower end of said shaft abuts, a plate secured transversely on said sleeve, a distributing or polishing element, and means for resiliently clamping said element against said plate. v .7

3. A distributing orpolishinghead comprising a vertical rotary shaft, a plate having a sleeve movable within limits on the lower end of said shaft, resilient means for normally pressing said plate outward from the shaft, a collar slidable on said sleeve, means for resiliently pressing said collar away from said plate, loops fixed in said collar passing through said plate, and a distributing or polishing element engageable by said loops whereby it is secured to the lower surface of said plate.

4. A device of the class described comprising a plurality of spindles and means whereby they are simultaneously driven, a horizontal traveling conveyer under said spindles adapted to carry articles to be polished, brushed, or rendered conductive, distributing or polishing elements carried by said-spindles, and means interposed for producing spring pressure on said elements as they are rotated.

A device of the class described comprising a plurality of rotatable vertical spindles, spring pressed distributingor polishingjelements at thelower ends of said spindles and spring. actuated clamping means for said elements, said clamping means engaging across the-faces of said elements. i V

6.. device of the class described comprising a plurality of rotatable vertical spindles, spring pressed wiping elements at the lower ends of said spindles, said elements being so arranged as to rotate completely over allthe surface therebelow, loops engaging said elements and means for releasing said loops from said spindles.

In testimony whereof I have signed my name to this specification.

1 JACOB BOTT. 

